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Martin Lewis explains if electric heaters are cheaper than radiators
Martin Lewis says a portable electric heater can cost less than central heating when someone needs to warm one small room for a short time. The advice matters as households try to stay comfortable while managing rising energy costs.
A typical 2,000-watt electric heater is estimated to cost about 53p an hour at October price-cap rates, while a 24-kilowatt gas boiler running at full output is put at about £1.91 an hour. Central heating may be more economical for several rooms or longer periods, and the best option depends on room size and how well the home is insulated.
In short
- Electric heaters can suit short stays in one room.
- Central heating may be cheaper for larger areas or longer use.
- Insulation and room size affect the cost.
Steelman: both sides, in good faith
The strongest fair case each way — we don't pick a winner.
The case for
A portable electric heater can be the more economical choice when someone needs to warm one small, occupied room briefly, because it avoids heating unused parts of the home. That targeted approach may also help households stay comfortable while limiting energy use, especially in a well-insulated room.
The case against
For several rooms or longer periods, central heating may provide warmth more economically and consistently than relying on individual electric heaters. The hourly figures compare appliances running at stated outputs, so actual costs depend on how long they run, the home’s insulation and heating needs; a portable heater may not be cheaper in every situation.